Good analysis. I think the accusations of racism against the TP are mostly strategic posturing, but there are some who honestly believe that the TP only arose in response to the election of our first black President. Of course, I view the timing of the TP's rise as coincidental.
In the spring of 2009, there was a sense of despair among smaller government types as it looked like liberalism was on a roll. Not only did we have a new, very liberal President, but he had charisma, the support of the media, and huge majorities in the House and Senate to work with. In fact, the Senate majority looked like it would be (and indeed became) filibuster-proof with the resolution of Al Franken's Senate race. The stimulus bill, which passed with almost no Republican support showed that the nation's conservatives were powerless in the face of the liberal onslaught. Bailouts for underwater mortgagors were being bruited about, as well as even the rewriting of contracts. And then came the next big item on the liberals' to-do list: a remaking of our health care insurance system.
Scary times, but it had nothing to do with the color of Obama's skin. There is no question in my mind that the Tea Party would go ga-ga over a charismatic small government conservative, regardless of their skin color. In fact, they did, and do.